Specifications

1. Low price and supreme quality
2. High wear resistance
3. Rock formation: 4
4. Long drill life

Supreme Quality Coal Drill Bit

 

  

 

Applications:

Apply to the ancher-network support hole drilling in coal mine, hydraulic project,etc.

Characteristics:

1. High wear resistance and impact-resistanct toughness;

2  To repeat repair & greaning are not necessary; long drill life;

3  High efficiency could be promoted sharply in penetration of high-medium hard rock formation;

4  Labour intensity could could be reduced.

5  Rock formation to be suitable t: F=4

  

 

Specification:

Colliery Drilling Tools	Main Standard(mm)
	D	H	L	M
Thread joint	27	44	17	M14×1.5
	27	54	17	M12×1.75
	28	54	20	M12×1.75
	29	52	18	M14×1.5
	30	50	18	M14×1.5
	32	52	22	M14×1.5
	32	56	22	M12×1.75